Thanks Bob for pointing this out! I know that getting synchrony within
a multichannel soundcard is not easy and it's probably impossible with
multiple soundcards unless thay have their own synchronizing
mechanisms. However, my "piece of hardware" is not a soundcard. Well,
being an complex programmable I/O interface it has multiple analog
inpput and outputs (as well as TTL I/O), so technically it can be used
as a soundcard. And I do play my stimuli with it. But it is not
controlled with windows sound mechanisms, and all issues of relative
timing between incoming and outgoing signals are solved with accuracy
well beyond my needs. I am talking about CED Power 1401 interface.
Pawel
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Pawel Kusmierek PhD
Department of Physiology and Biophysics
Georgetown University Medical Center
The Research Building WP23
3970 Reservoir Road NW
Washington, DC 20007
phone: +1 202 687-8851 or 8028, fax: +1 202 687-0617